Sectional steam-generator



3 Sheets- -Sheet 1.

J. JU'NGBLUT 82: S. A! EKEHGRN.

SEOTIONAL STE AM GENERATOR.

.PafcentedOot. 1, 1895. I

(No Model.)

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-( No Model.)-

- V J.JUNGBLUT & s. A. EKEHORN.

SEGTIONAL STEAM GENERATOR.

Patented Oct. 1, 1895;

AN DREW EGRANAM, PIIUTO'UTHO WAS WNGTON. D C,

(No Model.)

SEGTIONAL' STEAM GENERATOR.

No. 547,352. Patented Oct. '1; 1895 [all 1 iii. a ii, [11

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AN DREW IGRAHAM. PHOTO-UTNQWASHUNFWNJ C.

JULIUS J UNGBLUTAND'SVEN A. EKEHORN, OF MILWAUKEE,"WISCONSIN.

SECTIONAL STEAM-(31 EN ERATGR.

SPECXFICATION forming part of Letters Patent No. 547,352, dated October 1, 1895.

Application filed Gotober 29,1894. Serial No. 27,117. (No model.)

To all whom it may concern.-

Be it known that we, JULIUS JUNGBLUT and SVEN A. EKEHORN, citizens of the United. States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a new 'anduseful Improvement in Sectional Steam-Generators, of which the following is a specification.

Our invention relates to improvements in steam-generators of the class known as sectional-flue boilers, and our'object is to provide certain improvements in the construction thereof to the end of adapting the boiler more perfectly to its purpose in the sense of generating steam quickly and in large quantity at the minimum expense of fuel.

Our invention consists in the general construction of our improved boiler, and also in. details of construction and combinations of parts, all as hereinafter set forth and claimed.

In the drawings, Figure 1 is a vertical crosssection of our improved'sectional-flue boiler, one half of the'view at the left-hand side be ing taken on line 1 of Fig. 2 and the other half on line 1 of Fig. 2, both in the direction of the arrows; Fig. 2, a vertical longitudinal section taken on line 2 of Fig. l and viewed in the direction of the arrow; and

Fig. 3 a plan sectional view, one half, to the left, being-on line 3 of Fig. 1 and the other half, to the right, being on line 3 of Fig. 1.

The body portion of the structure consists of a front section A,interxnediate sections B, and a rear section '0. The front section A is. formed on each side with two upright tubes t 25, joined by a lower cross-tube t', of less width than the upright tubes shown in Fig.

'3, and by other cross-tubes of substantially the same width as the tubes 6, corresponding in position with those of the sections B, hereinafter described. The pairs of upright tubes ttof the section A at opposite sides of the structure are joined by circulating-tubes s s s and. an upper tube or chamber s in the relative positions shown most plainly in Fig. 2. The sections B are each formed on opposite sides of the structure with pairs of vertical tubes 1, the members of each pair being joined by cross tubes or passages r, and the opposite columns, consisting each of a pair of tubes 7', being joined by cross-tubes q g g and a tube or chamber (1 having a rounded under surface y. On the front section A, and formed, preferably, integral therewith, is a front plate 8 which extends from the lower tube 3 to the chamber 5 and closes the upper part of the front of the structure. Set into the opening bounded on opposite sides by the columns t, at the top by the tubes 8, and at the bottom by a tube sicorresponding with thetube s, is a frame p for a door The rear section 0 is formed of two parallel walls 71. n, which constitute the closed back of the furnace. The chamber 77. between the walls is a continuous space broken only by the smoke-flue n passing through its center and upper part. The rear face of the front section A, the front face of the rear are put together form tubes in which are placed strips of asbestos rope m. The joints between the sections are thus rendered sufficiently tight.

The sections placed together as described fit at opposite sides into a base structureD, formed on each side with an inner walll and an outer wall Z, and formed at the back with an inner wall l and' ran outer wall Z At its center the outer back wall Z is formed with a tubular projection 1, from which extends the smoke-outlet flue E. From the flue Eextends a thimble E" through the passage n in the back section 0, and in the thimble E is a damper-E which may be turned from outside the furnace. On the walls Z, registering with the centers of the sections B, are shelfpockets Z forming bearings for sectional rocking' grate-bars F. Below the front section A and rear section 0 are stationary grate-bars F. The rocking grate-bars F are each. provided with a downwardly'extending arm F pivotally connected at their lower ends to an operating-bar F. I

The space between the walls land below the grate constitutes the ash-pit G. The I The front section A on its rear side side near the top, and the intermediate sections B on both sides near the top are recessed coincidently to produce fiues or passages it, which extend through the wall formed by the inner tubes 25 r to the spaces between the inner and outer tubes 6 r on each side. The cross-tubes s s s are staggered in the sense that while the tubes 8 s are toward the front of the section A the tubes 8 are toward the rear of said section. The cross-tubes q g g of the intermediate sections B are also stag gered, as indicated.

In the opposite sidesof the base D, between the walls Z Z, are chambers i i and between the front wall Z and rear wall Z of the base is a cross-chamber c". In the chambers-i t' are drums I I, connected by a cross-drum I in the chamber 2'. The three drums communicate with a water-pipe K. The drums 0r pipes I extend below the lower ends of the sections A B- C and communicate with the latter through pipes 1 which extend into the lower cross-tubes t of the section A, lower crosstubes r of the sections 13, and lower part of the chambern of the rear section 0. Above the sections is a steam-drum L, which connects by means of pipes L with the upper ends of all the sectionsnamely, the chamber 3 of the front section A, the chambers g of the intermediate sections, and the top of the chamber a of the rear section. From the drum L extends the steam-pipe L In practice the products of combustion from the fire-chamber H rise between the staggered tubes q g g of the intermediate sections and also between thestaggered tubes 3 s s of the front section, and if the damper E is open.

they will pass directly to the smoke-flue E. When the damper E is closed, the products of combustion pass through the does It and descend between the upright tubes of the columns and cross-tubes r to the chambers't in. the base. The chambers 2 are in open com-' munication with the opposite ends of the rear chamber 1', and the products of combustion pass to the latter and through the tubular extension Z to the smoke-flue E. The air to support combustion may enter the ash-pit G through the usual damper in the ash-pit door G and through a rear damper G The water to be converted into steam enters through the pipe K to the drums I I I and rises thence through the pipes 1 to the sections A B O, rising in the fines t t 'r r of the columns and filling the tubes 25 s 'r s s s q q (1 rear chamber 02 and upper chambers s Q3 to the water-level, which is indicated by the dotted line 00 in Figs. 1 and 2. The hot products of combustion rising between the staggered tubes and playing against the chambers g heat those parts very rapidly and to a high degree, while the products of combustion passing down between the tubular walls of the columns then heat the lower flues r and lastly the drums I If. The effect is that the products of combustion pass first against the tubes and chambers in which the steam is generatedthat is to say, they exert their greatest heat directly at or near the surface of the water. Passing thence down between the lower fines and against the drums, the products of. combustion exert themselves finally against the latter. In this way the greatest heat is exerted at the parts where the greatest heat is required, and as the products of combustion become cooler they come in contact with the pipes which feed the water to the boiler.

The structure may, if desired,be set in masonry or, and preferably, it may be provided with a sheathing M over the sides, back, and top, with an intervening space filled with an asbestos or other refractory lining M.

Constructed as described ourimproved f urnace is especially durable, for the reason that the sides, back, and top of the fire-chamber are water-lined. The staggered arrangement of the cross-fines above the chamber causes the currents of the products of combustion to be broken up and to contact with all parts of the said flues. The rounded under-surfaces of the upper chambers 5 g present large areas to the products of combustion, the latter while. still almost at their highest temperature striking the said under surfaces and remaining in contact therewith an extended time while flowing to and escaping through the fiues 70. Owing to the prolonged time that the products of combustion are caused to remain in contact with the surfaces y of the upper or steam-generating chamber (1 the greatest heat absorption takes place at said chambers, which, being at the water-level, are the parts where for purposes of economy the greatest heat should be exerted.

The aim of improvement in steam-generators is naturally in the direction of complete heat-absorption from the products of combustion, whereby the greatest amount of steam may be generated at the least expense of fuel. Our improved furnace, owing to its construction, causes the water to absorb heat from the products of combustion to a degree, we believe, not before accomplished in other furnaces. The structure is very compact and takes up less space than any other furnace of the same capacity for steam generation of which we are aware, and the construction is simple, whereby the furnace may be erected at a comparatively small cost.

' What we claim as new, and desire to secure by Letters Patent, is-

A sectional fiue boiler comprising, in combination, a base D having the side chambers 2' and rear chamber 'i communicating with each other and central ash-pit G, a gratecovering for the ash-pit G,- a body-portion consisting of a front section A, intermediate sections B and rear section 0, the front section A being formed with vertical side columns consisting of upright tubes 23 and narrower cross tubes 15, an upper cross chamber 8 and staggered tubes 8 .9 3 all connecting the columns together, the intermediate sections B being formed of side columns, comprising'each a pair of vertical parallel tubes 0" connected by cross tubes 'r' and upper cham bers g staggered fines q g g connecting the columns, and the rear section 0 comprising a front wall at and a rear Wall n with an intermediate chamber 41 and the sections forming when placed together on the base a fire chamber H, fines 7s and outer fines extending between the vertical tubes r from the fiues It to the chambers t', water-supply drums I in the chambers 11 connected with the lower ends ofthe sections, a drum 1 in the chamber t" connecting the drums I, a steam drum L above the sections and communicating with the up- I 5 per chambers thereof through connecting pipes L, a smoke flue E extending from the chamber t" and a flue E extending through the section 0 from the smoke fine E to the upper rear part of the fire chamber, and a damper E in the flue E, the parts being constructed and arranged to operate as and for the purpose set forth.

JULIUS J UN GBLUT. SVEN A. EKEHORN.

In presence of- S. G. RICHTER, FERDINAND RICHTER. 

